AS399776 Premera Blue Cross

PBC-SEA-WA-POP - Premera Blue Cross · registered in the United States

IPv4 addresses1,0242 prefixes · <0.001% of announced IPv4

Rank in United States#8,994largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#42,372of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS399776 in ASN lookup Look up an IP in this network (199.187.70.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

199.187.70.0/23
199.187.88.0/23

Other ASNs named Premera Blue Cross

2 other networks use the same organisation name; together with AS399776 they announce 3,072 IPv4 addresses.

ASNNameIPv4 addresses

AS395778PBC-QNC-WA - Premera Blue Cross US1,536

AS29823PBC-WA - Premera Blue Cross US512

Similar-sized networks in United States

ASNNameIPv4 addresses

AS399656#8991 ETHX-BIZ - ETHX1,024

AS399660#8992 JANPA-ISP - WWLTH, Inc1,024

AS399773#8993 CASTLE-COOKE - Castle & Cooke1,024

AS399892#8995 ASN - Cloudtunnel1,024

AS399925#8996 CITY-IT-INTERNET-01 - City of Gainesville1,024

AS399949#8997 AS-CYLOGIC - CYLOGIC INC1,024

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources